The document discusses the benefits and challenges of publishing Android apps across multiple app stores beyond Google Play, highlighting the need for better app discoverability and the existence of millions of devices without Google Play. It introduces 'appdf', an open file format designed to streamline the publishing process by packaging necessary app elements, and promotes a unified in-app billing API to address diverse billing systems across different stores. The document invites developers to utilize 'appdf' and contribute to making the app store experience less cumbersome.

2. OPF: Publishing
to multiple app
stores simplified
Timur Dyussebayev
Android developer relations

3. Appstores on Android
• Google Play is not the only store
• Why publish anywhere else?
• What challenges do we have

4. Over 20 Android app
stores
4

5. 5

6. Why publish anywhere else?
• Don’t miss the devices without Google Play
• Better app discoverability/exposure
• Larger geo spread
6

7. Millions of devices without
Google Play worldwide
7

8. Amazon has 11.5% of
WW tablet sales*
* - IDC
8

9. SlideME is exclusive on
20M+ devices*
* - SlideME data
9

10. Korea: T-Store 18.5M
users, 1.1B downloads*
* - SK Planet press release
10

11. Russia: Credit card?
No, thank you!
11

12. Russia: Yandex.Store -
direct carrier billing with
all major carriers
12

13. App distribution in China
The West China*
* - TechCrunch
13

14. China Mobile MM: 149M
users, 1.92B downloads
* - TechCrunch
14

15. Let’s do it?
It’s essential to look at alternative appstores, but
1. Need to solve appstore publishing (time
consuming)
2. Need to solve in-app billing (time consuming)
15

16. OPF is about solving
them
16

17. 1. AppDF
A format to ease developer’s life

18. How things stand
• Publishing to each store is time consuming:
• APK
• Screenshots
• Description
• Changelog
18

19. 19

20. It would take up to 1 day
to update an app in all
appstores
20

21. App Description File Format (AppDF)
AppDF is an open file format that packages:
• APK
• Description
• App icon
• Screenshots
• Promo images
21

22. description.xml demo
22

23. All of this can be done
using AppDF Editor
23

24. 24

25. 2. Open In-app Billing
A single in-app billing API

26. Problems: Billing APIs
• In-app billing is not a part of Android
• Different stores – different APIs
26

27. 27

28. 28

29. What is available today?
• AppDF: Specification v1.0
• AppDF: Editor
• AppDF: libs for parsing AppDF
• Open IAB: demo app with all in-app billings
implemented
29

30. Join us
• Try AppDF. 2 stores support it
• Give us feedback
• Check out Open IAB on Github
• If you like it… contribute
• And enjoy a less painful alternative store
experience
30

31. onepf.org
31

32. Timur Dyussebayev
@onepf_org
onepf.org
Questions?